NABTESCO CORPORATION

NABTESCO CORPORATION Patent applications

Patent application number

Title

Published

20150158503

RAILWAY VEHICLE PLUG DOOR DEVICE AND RAILWAY VEHICLE PLUG DOOR - It is aimed to provide a railway vehicle plug door device capable of easily ensuring airtightness between a side structure body and a door leaf even if the railway vehicle plug door device is installed in a side structure body having a structure assembled by joining structural members by welding and including a bent part. A frame body is mounted on a part constituting an entrance in a side structure body by a mechanical fastening structure. A seal member is mounted on at least one of a door leaf and the frame body and held in close contact with both the door leaf and the frame body when the door leaf closes the entrance.

06-11-2015

20150145264

DOOR OPENING AND CLOSING APPARATUS - A door opening and closing apparatus includes a lock mechanism having an engaging member that engages with a lock member provided in a door when the door is in a fully closed state, and a link mechanism that has three link members, is configured to be able to undergo deformation into a linear state and a bent state, and restricts rotation of the engaging member by being brought into the linear state. A central link member among the three link members has a first face and a second face that are pressed by a projecting shaft. The link mechanism changes to the bent state when the first face is pressed, and changes to the linear state when the second face is pressed. The first face and the second face are provided so as to have a positional relationship in which the first face and the second face intersect each other.

05-28-2015

20150114151

ELECTROMECHANICAL ACTUATOR AND ACTUATOR UNIT - An actuator is driven even if a jammed state, a motor stop, or the like occurs. An electromechanical actuator includes: an electric motor attached to a housing; a conversion mechanism portion having a drive portion that is driven to rotate by the electric motor and a driven portion that is driven by the drive portion and advances and withdraws in a predetermined advancing and withdrawing direction, the conversion mechanism portion being accommodated in the housing; a sliding support mechanism that transmits rotational force of the electric motor to the drive portion and allows the drive portion to slide in the advancing and withdrawing direction with respect to the electric motor; and a piston portion controlled so as to be at a predetermined position in the advancing and withdrawing direction with respect to the housing by means of pressure of a fluid supplied to and discharged from the housing.

04-30-2015

20150097455

ELECTROMECHANICAL ACTUATOR - An electromechanical actuator is provided whose structure is simplified and made small, and with which an output portion can be driven even if a jammed state occurs in a screw mechanism. An electromechanical actuator is configured that includes an electric motor having a first rotor portion and a second rotor portion capable of relative rotation with respect to each other, and a jam relief mechanism having a first conversion portion having a first screw mechanism capable of converting rotational force of the first rotor portion into thrust force and moving an output portion back and forth, a sliding support mechanism which can transmit the rotational force of the first rotor portion to the first conversion portion, and a second conversion portion having a second screw mechanism which moves the output portion back and forth together with the first conversion portion.

04-09-2015

20150061378

AIRCRAFT ELECTRIC POWER SYSTEM - An aircraft electric power system provided in an aircraft includes a predetermined DC power supply bus for supplying electric power to a load. The DC power supply bus is configured to always be connected to two or more types of power supply devices having different forms.

03-05-2015

20150060601

AIRCRAFT ELECTRIC ACTUATOR DRIVE APPARATUS - An aircraft electric actuator drive apparatus has an electric actuator and a secondary power supply device. The electric actuator is driven using electric power from a main power unit provided in an aircraft. The secondary power supply device can temporarily supply electric power to the electric actuator while electric power from the main power unit is applied to the electric actuator.

03-05-2015

20150054294

OPENING AND CLOSING APPARATUS WITH LOCK - An opening and closing apparatus with a lock that is provided is capable of safely and promptly closing a sliding door, and also easily performing unlocking with a simple configuration. In an opening and closing apparatus with a lock for opening and closing sliding doors that are provided with elastic members at their door leading ends, output of an electric motor is transmitted to a rack-and-pinion mechanism or a lock mechanism. A control unit controls the electric motor such that a closing operation is performed, the closing operation operates the rack-and-pinion mechanism so as to move the sliding doors to a fully closed position and then displacing a link mechanism in a lock mechanism from an unlocking position to a locking position. Furthermore, the control unit controls the electric motor so as to reduce the output of the electric motor at a predetermined intermediate time point during the closing operation.

02-26-2015

20150013489

REDUCTION GEAR - Provided is a reduction gear with which allowable output can be further increased and a reduction in size can be achieved. A reduction gear (

01-15-2015

20140371019

GEAR UNIT - A gear unit has a washer which is provided at a position where the washer is able to come into contact with a retainer of roller bearings provided to each of adjacent eccentric parts in a crank shaft, and which regulates a movement of the roller bearing in an axial direction. A housing recess which houses the washer is formed on at least one face of the faces of adjacent oscillating gears facing each other. The housing recess includes an axial direction regulating surface which regulates movement of the washer in the axial direction, and a radial direction regulating surface which regulates movement of the washer in the radial direction.

12-18-2014

20140366449

DOOR OPENING AND CLOSING APPARATUS - A door opening and closing apparatus including a lock mechanism that is configured to hold the door in a fully closed state, and that has an engaging member which engages with a lock member provided in the door when in the fully closed state. A link mechanism having a plurality of link members is configured to be able to undergo deformation into a linear state and a bent state, and restricts rotation of the engaging member by being brought into the linear state. In the link mechanism, a first face is pressed by a projecting shaft moved by the actuator in order that the link mechanism changes from the linear state to the bent state, and a second face is pressed by the projecting shaft in order that the link mechanism changes from the bent state to the linear state.

12-18-2014

20140345901

WIRING SUPPORT STRUCTURE - Configured is a wiring support structure provided with a column portion fixed to or provided integrally with an installation object in which wiring is installed, and provided so as to project from the installation object, a wiring support portion having a wiring arrangement portion that is arrangeable so as to extend along the installation object and in which the wiring is arranged in an extending direction of the wiring arrangement portion, the wiring support portion being supported by the column portion in a state where the wiring support portion is separate from the installation object, and an attachment portion for attaching the wiring to the wiring arrangement portion.

11-27-2014

20140332626

AIRCRAFT REACTION LINK AND MOVING SURFACE DRIVE UNIT - An aircraft reaction link includes a head portion and a link body portion that is made of fiber reinforced plastic and formed integrally. The link body portion has a pair of leg portions, and a connecting portion that connects one end portion of each of the pair of leg portions to each other. The other end portion of each of the pair of leg portions is provided pivotably with respect to a second end side of the actuator. The head portion has a plurality of head constituent members that are fixed to the connecting portion in a state of being arranged so as to surround the outer periphery of the connecting portion, one of the head constituent members being provided with a bearing, and the head portion is provided pivotably with respect to the moving surface via the bearing.

11-13-2014

20140326547

BRAKE CYLINDER DEVICE AND DISK BRAKE DEVICE - The present invention provides a small brake cylinder device that can increase braking force output from a brake output portion that moves along with a rod, while suppressing an increase in the device size. A piston defines a pressure chamber and surrounds the axis of the rod inside a cylinder body, and moves in a linear direction that is parallel to the movement direction of the rod. When pressure fluid is supplied to the pressure chamber, the piston moves in the backward movement direction relative to the cylinder body in resistance to biasing force from a rod biasing spring. Swinging members of a force amplifying mechanism swing due to being biased by the piston moving in the backward movement direction, and moves the rod by biasing it in the forward movement direction. The force amplifying mechanism amplifies the drive force generated by the piston and applies it to the rod.

11-06-2014

20140231192

UNIT BRAKE - Disclosed is unit brake, which is equipped with a cylinder apparatus in which a clutch mechanism that switches between transmitting or cutting off a biasing force of a spring brake part is disposed, is capable of preventing a braking force due to the spring brake part from unintentionally decreasing due to a meshing section of the clutch mechanism disengaging, and is of a size that can replace an existing unit brake, and maintains the performance of bearings in the clutch mechanism even with long-term use. The clutch mechanism of the unit brake includes: a nut member that rotatably screws on a spindle that is positioned in an area that communicates with the atmosphere, and is movably supported in a direction opposite to braking; a clutch that is disposed in a direction opposite to braking with respect to the nut member, and faces the nut member in the vicinity of the spindle; a clutch box that is formed in a cylinder shape, and houses the nut member and clutch on the inside; and bearings that rotatably support the nut member on the inside of the clutch box.

08-21-2014

20140206497

GEAR DEVICE - A gear device includes an outer cylinder, a plurality of crank shafts, a carrier which rotatably supports the plurality of crank shafts and rotates relative to the outer cylinder in synchronization with the rotation of the crank shafts, a plurality of spur gears fixed coaxially with the crank shafts at portions extending toward an outer side of the carrier in the crank shafts, an input gear which includes a gear part that engages with the plurality of spur gears, and transmits rotational drive force to each of the spur gears, and washer means comprising washers disposed outside the carrier. The input gear is regulated from moving in a radial direction of the input gear by engaging with the plurality of spur gears at a position outside the carrier in an axial direction, and regulated from moving in an axial direction of the input gear by the washers.

07-24-2014

20140196554

GEAR DEVICE - Provided is a gear device capable of resolving inconveniences such as abnormal wear that arises due to the relative misalignment between the internal gear pins and the external gear, and inhibiting an increase in the number of components. This gear device has an outer cylinder, internal gear pins, and a carrier. A plurality of pin grooves extending in the axial direction of the outer cylinder are formed on the inner peripheral face of the outer cylinder, and the internal gear pins are fitted in the pin grooves. The pin grooves are formed so that the length of the pin grooves becomes longer than the length of the internal gear pins. The carrier has a pair of pressing members which includes a pressing surface. The pressing surface is configured to regulate movement of the internal gear pins and an oscillating gear which includes external teeth in the axial direction.

TERMINAL CONNECTION JOINT AND TERMINAL BLOCK - A terminal block includes a terminal portion having an end surface formed with a screw hole and a peripheral surface, a terminal connection joint including a tubular portion having an inner peripheral surface which faces the peripheral surface of the terminal portion, a contact portion having a first contact surface which comes into contact with the end surface of the terminal portion and a second contact surface which comes into contact with a plate-like terminal and a clamping portion for clamping the plate-like terminal between the contact portion and the clamping portion, a fixing bolt including an externally threaded portion to be threadably engaged with the screw hole and a head portion for pressing the clamping portion in a direction to press the plate-like terminal. The contact portion is configured to press the plate-like terminal by being elastically supported on the tubular portion.

06-12-2014

20140150605

ACTUATOR-LINK ASSEMBLY MANUFACTURING METHOD, ACTUATOR-LINK ASSEMBLY DESIGNING METHOD, AND ACTUATOR-LINK ASSEMBLY - In a material determining step, the material constituting an actuator and the material constituting a link are determined such that at least one of the materials contains fiber reinforced plastic. In a computing step, a computation model that defines the relationship between a control surface, the actuator, and the link is used to compute the change in gain margin with the change in a rigidity ratio, which is the ratio of the rigidity of the link to the rigidity of the actuator. The rigidities of the actuator and the link are determined in a rigidity determining step based on a result of the above-described computation, the shapes of the actuator and the link are determined in a shape determining step, and the actuator and the link are formed in a formation step, and are assembled in an assembly step.

06-05-2014

20140116422

SOLAR CONCENTRATING SYSTEM - A solar concentrating system includes a heliostat having an actuator that adjusts a reflecting direction of a mirror reflector. An anemometer measures wind direction and wind speed. A controller generates and outputs a target angle command to the actuator in order to control the actuator. The controller generates the target angle command based on the current position of the sun and on the wind direction and the wind speed measured by the anemometer.

05-01-2014

20140090301

DOOR SUSPENSION DEVICE AND DOOR APPARATUS COMPRISING THE SAME - A door suspension having a compact structure. First door rollers run in contact with a lower rail, and are rotatably supported to a first door roller supporting member that suspends a door. Second door rollers are rotatably supported to swing members swingably connected to the first door roller supporting member, and are provided so as to be capable of coming into contact with an upper rail. A drive connection portion holds the door and connects the door to an open-close drive mechanism. An elastic connection mechanism includes an elastic portion capable of changing the relative positions of the second door rollers and the drive connection portion, and connects the swing members to the drive connection portion. The second door rollers are installed between the first door rollers on the door leading end side and the door trailing end side.

04-03-2014

20140020299

PLUG DOOR DEVICE - Provided is a small plug door device capable of performing an opening/closing operation and a plugging operation with a door drive mechanism for causing a force in a vehicle front-rear direction to act on a door, and further applicable also to a one-panel sliding door. A slide base

01-23-2014

20130340605

SWASH PLATE-TYPE MOTOR - On a near-bottom inner surface of a tilt piston cylinder hole, only a limited part that contacts an end of a tilt piston when the tilt piston is tilted by a pressing force from a swash plate is laser-hardened along the circumferential direction of the tilt piston cylinder hole (i.e., a hardened part is formed). In the tilt piston cylinder hole, parts other than a near-opening inner surface and the near-bottom inner surface are not laser-hardened.

12-26-2013

20130340547

ACTUATOR - A linear drive portion is fixed to a piston. A nut portion and a screw portion relatively rotate, and a direction of action of driving force is converted between a rotational direction and a linear direction. The piston is installed within a case. The inner circumference of a piston sliding portion fixed within the case slidably supports the outer circumference of the piston. The nut portion is displaced with the piston, and the screw portion rotates in conjunction with a rotational drive portion. The piston is installed so as to be able to slide in the axial direction of the case with respect to the piston sliding portion. The axis of the piston and the central position of the inner circumference of the piston sliding portion are set to be eccentric with respect to the axis of the screw portion and the nut portion.

12-26-2013

20130340346

OPENING/CLOSING APPARATUS WITH LOCK - Provided is an opening/closing apparatus with a lock capable of performing the opening/closing and closed lock of a sliding door by a single actuator and arbitrarily setting the timing of a lock operation. In the opening/closing apparatus with a lock, an electric motor is driven and the drive force of the electric motor is input to the sun gear of a planetary gear mechanism and output from the internal gear or the carrier. A pair of sliding doors are opened and closed by the drive force output from the internal gear. While the pair of sliding doors are at a fully closed position, the lock and lock-released states of a lock mechanism are switched by a lock restricting mechanism.

12-26-2013

20130336816

AIRCRAFT ACTUATOR HYDRAULIC SYSTEM - A backup hydraulic pump supplies pressure oil to an actuator when a loss or degradation of the function of an aircraft central hydraulic power source occurs. A control valve controls the operation of the actuator by controlling supply and discharge of the pressure oil to/from the actuator. The control valve has a main body provided with a pressure oil port, a spool portion that moves in a sliding manner within the main portion and switches a path of the pressure oil, and a drive portion. The drive portion is connected to an end of the spool portion and drives the spool portion by electromagnetic force so as to control the position of the spool portion based on an electric signal.

12-19-2013

20130336753

WAFER HANDLING ROBOT - A wafer handling robot includes a body and an arm having a plurality of links. A wafer holder is provided on one end of the arm. A base of the arm serves as a drive link and is rotatably connected to the body. The arm is configured such that, when the drive link is rotated by a motor, the arm end is constrained to move along a straight or curved trajectory. A starting point and an end point of the trajectory are located equal distantly from a center of rotation of the drive link. Further, the direction of the arm end at the starting point is a mirror image of the direction of the arm end at the end point with respect to a straight reference line passing through the center of rotation and a middle point between the starting and the end points.

SPEED REDUCER FOR INDUSTRIAL ROBOT - A speed reducer for an industrial robot includes a speed reducer main body and a lubricant deterioration sensor for detecting deterioration of a lubricant in the speed reducer main body. The lubricant deterioration sensor includes a light emitting element for emitting light, a color light receiving element for detecting a color of received light, a clearance forming member forming an oil clearance in which the lubricant enters, and a support member supporting the light emitting element, the color light receiving element, and the clearance forming member. The clearance forming member is transmissive so that the light emitted from the light emitting element transmits therethrough. The oil clearance is provided on an optical path from the light emitting element to the color light receiving element

09-26-2013

20130250281

LUBRICANT DETERIORATION SENSOR - A speed reducer for an industrial robot includes a speed reducer main body and a lubricant deterioration sensor for detecting deterioration of a lubricant in the speed reducer main body. The lubricant deterioration sensor includes a light emitting element for emitting light, a color light receiving element for detecting a color of received light, a clearance forming member forming an oil clearance in which the lubricant enters, and a support member supporting the light emitting element, the color light receiving element, and the clearance forming member. The clearance forming member is transmissive so that the light emitted from the light emitting element transmits therethrough. The oil clearance is provided on an optical path from the light emitting element to the color light receiving element.

09-26-2013

20130247754

ROTARY ACTUATOR - An output shaft and arms are installed inside a cylinder. Pistons that are formed in an arc shape and rotatably connected to the arms slide and are displaced in the circumferential direction of the cylinder inside the cylinder. Inside the cylinder, a first pressure chamber on the arm side and second pressure chambers on the piston head portion side are provided. Third pressure chambers are provided on both sides of the cylinder. A pressure medium is supplied to one of the first pressure chamber and the second pressure chamber and discharged from the other, and the output shaft pivots in a rotational direction. When the pressure medium is supplied to the second pressure chambers, the pressure medium is also supplied to the third pressure chambers.

AIRCRAFT MOTOR DRIVE CONTROL APPARATUS - An inverter and a control unit that has a command signal processing unit and a PWM frequency control unit and performs pulse width modulation control are provided. If the command signal processing unit has received a first PWM frequency command signal, it outputs a low PWM frequency command signal so that synchronous or asynchronous PWM control is performed at a PWM frequency in a predetermined frequency range. The command signal processing unit outputs a high PWM frequency command signal so that synchronous or asynchronous PWM control is performed at a higher frequency than the above-mentioned frequency if the command signal processing unit has received a second PWM frequency command signal and until a predetermined time period elapses. The command signal processing unit outputs a low PWM frequency command signal if it has received the second PWM frequency command signal and after the predetermined time period elapsed.

07-25-2013

20130133513

ROTARY ACTUATOR - A cylinder is installed within a case, and an output shaft and an arm that is integrated thereto and extends in a radial direction are installed within the cylinder. A piston extending in an arc slides and is displaced in a circumferential direction of the cylinder within the cylinder. One end portion of the piston is rotatably connected to the arm. The cylinder is internally provided with a first pressure chamber in which the arm is housed and a second pressure chamber in which the other end portion of the arm is slidably installed. A pressure medium is fed into one of the first and second pressure chambers and discharged from the other, and the output shaft pivots in a rotational direction.

05-30-2013

20130127272

DRIVE UNIT FOR WINDMILL - A cutaway portion is provided in a driving force transmission path and serves as a disconnection mechanism for disconnecting the driving force transmission path under the action of a torque of a predetermined magnitude or more, the driving force transmission path being a path through which a driving force is transmitted from an output shaft to a pinion. A partitioning portion is provided inside the body and disposed between the cutaway portion and a speed reduction portion so as to partition an area between the cutaway portion and the speed reduction portion.

05-23-2013

20130124019

AIRCRAFT CONTROL APPARATUS AND AIRCRAFT CONTROL SYSTEM - A plurality of control channels each include a power supply, an interface that receives a manipulation signal, an arithmetic processing portion that calculates and generates an operation command signal for actuators based on the manipulation signal, and a signal determination unit that determines a control signal for finally controlling the operation of the actuators and outputs the control signal. The arithmetic processing portions respectively provided in the plurality of control channels have designs different from one another. Each of the signal determination units determines the control signal by receiving a first operation command signal generated by the arithmetic processing portion of the control channel in which that signal determination unit is provided, and a second operation command signal generated in the arithmetic processing portion of another of the control channels, and comparing the first operation command signal and the second operation command signal, and outputs the control signal.

GEAR TRANSMISSION - A gear transmission includes an eccentric-oscillating-type first reduction gear unit having a first internal gear, a first crankshaft with at least one first eccentric body defined thereon, a first input gear fixed to the first crankshaft and a first output member, as well as an eccentric-oscillating-type second reduction gear unit disposed coaxially with the first reduction gear unit and surrounding the first reduction gear unit. The second reduction gear unit has a second internal gear, a second crankshaft with at least one second eccentric body defined thereon, a second input gear fixed to the second crankshaft and a second output member. The first output member is engaged with the second input gear. Further, the first internal gear is disposed, in the axial direction of the gear transmission, between the second input gear and the at least one second eccentric body.

04-25-2013

20130084156

ROBOT ARM - The robot arm of the present application is a robot arm that transports semiconductor wafers. The robot arm includes a hand, a lower arm link, and an upper arm link. The hand is connected to the lower arm link via a first joint. The upper arm link is connected to the lower arm link via a second joint. In the robot arm of the present application, the lower arm link is capable of being separated at a location between the first joint and the second joint.

04-04-2013

20130047838

FLUID ACTUATOR - A fluid is supplied and discharged to and from a cylinder. A body portion is fixed to a fixed-side structure, and the cylinder is provided integrally with the body portion. A piston defines a cylinder chamber inside the cylinder and slides on an inner wall of the cylinder. A rod is provided integrally with the piston and is displaced so as to extend from and contract into the cylinder. A link member is installed parallel to the axial direction of the cylinder or installed so as to extend obliquely to a direction parallel to the axial direction of the cylinder, and a first end of the link member is pivotably connected to a movable-side structure. A connecting member is fixed to the rod, and a second end of the link member is pivotably connected to the connecting member.

02-28-2013

20130038121

Hybrid Construction Machine Control System - A generator connected to an engine generates AC power. A converter is connected to the generator, and an inverter for controlling the electric power to a rotation electric motor is connected to the converter. The converter and the inverter are formed of IGBTs connected between power supply lines and the rotation electric motor. The AC power from the generator is converted directly to AC power which can be supplied to the rotation electric motor.

02-14-2013

20120322608

GEAR DEVICE - Disclosed is a gear device which comprises an outer cylinder fixable to one of two counterpart member; a crankshaft; a carrier configured to be fixable to the other counterpart member and formed with a through-hole, wherein the carrier is adapted to be relatively rotated with respect to the outer cylinder in interlocking relation with rotation of the crankshaft; and a cylindrical body disposed in the through-hole of the carrier. The through-hole of the carrier has an inner peripheral surface formed with an outward groove. The cylindrical body has an outer peripheral surface formed with an inward groove in opposed relation to the outward groove of the carrier. The gear device is provided with an O-ring disposed to extend from an inside of the outward groove to an inside of the inward groove.

12-20-2012

20120306259

VEHICLE COMPRESSED AIR SUPPLY DEVICE - Disclosed is a vehicle compressed air supply device, comprising pressure maintenance valves for service brakes, which are positioned between a junction chamber and compressed air channels for primary brakes; a pressure maintenance valve for the parking brake, which is positioned between the junction chamber and a compressed air channel for the parking brake; and a pressure maintenance valve, positioned on a supply path that connects the pressure maintenance valve for the parking, brake with the junction chamber, and which is closed until the pressure of the compressed air that is supplied to the compressed air channels for the primary brakes reaches a prescribed pressure value. The pressure maintenance valve has the same structure as the pressure maintenance valves for service brakes and the pressure maintenance valve for the parking brake.

12-06-2012

20120305701

AIRCRAFT CONTROL SURFACE DRIVE MECHANISM - An actuator includes a plurality of cylinder units each including a cylinder and a rod, and is pivotably attached, at a first end thereof, to a control surface. A reaction link is pivotably attached, at a first end thereof, to a fulcrum shaft rotatably supporting the control surface. The reaction link is pivotably attached, at a second end thereof, to a second end of the actuator between the plurality of cylinder units.

12-06-2012

20120303227

HYBRID CONSTRUCTION MACHINE CONTROL SYSTEM - [Object] When total power required by a hybrid construction machine increases above output power available from a driving source, power supplied to a rotation motor is restricted.

11-29-2012

20120283062

GEAR TRANSMISSION - A gear transmission is provided with an internal gear and an external gear that eccentrically rotates relative to the internal gear while meshing with internal gear. The internal gear includes first recesses formed on an inner circumferential surface of a case so as to be side-by-side in a circumferential direction, and inner pins inserted into the first recesses. A second recess is formed on the inner circumferential surface of the case within a distance from the center of a first recess along the circumferential direction that equals the tooth pitch of the external gear. Lubricant is retained in the second recess.

11-08-2012

20120221262

ELECTRONIC DEVICE INTEGRITY MONITORING APPARATUS - A storage unit stores a first reference value of an input/output electric signal into/from control unit and a second reference value of an input/output electric signal into/from a monitoring unit. If the amount of deviation between the input/output electric signal into/from the control unit and the first reference value exceeds a threshold value, a first caution signal output unit detects degradation of the control unit and outputs a caution signal. If the amount of deviation between the input/output electric signal into/from the monitoring unit and the second reference value exceeds a threshold value, a second caution signal output unit detects degradation of the monitoring unit and outputs a caution signal. The first and second reference values are acquired and stored in the storage unit in a period between completion of production of the control unit and the monitoring unit and start of the operation thereof.

08-30-2012

20120203509

MAINTENANCE INFORMATION OUTPUT APPARATUS AND MAINTENANCE INFORMATION OUTPUT SYSTEM - A maintenance information output system is provided that includes an iron amount detecting device, a receiver, a maintenance information output apparatus, and a controlling portion. The iron amount detecting device is attached to a speed reducer, and detects an amount of iron in a lubricant in the speed reducer. The receiver receives data of the amount of iron detected by the iron amount detecting device. The maintenance information output apparatus has an outputting portion which outputs maintenance information of the speed reducer. The maintenance information output apparatus has a receiving portion which receives the data from the receiver. When the amount of iron is equal to or larger than a threshold value, the controlling portion causes the outputting portion to output the maintenance information.

AIRCRAFT ACTUATOR - A plurality of tandem actuators including piston rods in each of which two pistons are provided in series are disposed in parallel. A rod end portion couples the piston rods of the plurality of tandem actuators on the outside of case portions and can be rotatably linked to a control surface. For each of the tandem actuators, first hydraulic chambers on the side opposite to the rod end portion side are in communication with each other in the two piston movement areas, respectively, and second hydraulic chambers on the rod end portion side are in communication with each other in the two pistons areas, respectively.

07-19-2012

20120131912

AIRCRAFT ACTUATOR HYDRAULIC SYSTEM - A first actuator drives a control surface by being operated by supply of pressure oil from a first aircraft central hydraulic power source including a first aircraft central hydraulic pump. A second actuator drives the control surface by being operated by supply of pressure oil from a second aircraft central hydraulic power source including a second aircraft central hydraulic pump. A backup hydraulic pump is installed inside a wing of the aircraft and is provided so as to be able to supply pressure oil to the first actuator when a loss or degradation in a function of at least one of the first aircraft central hydraulic power source and the second aircraft central hydraulic power source occurs. A maximum discharge pressure of the backup hydraulic pump is set to be greater than maximum discharge pressures of the first aircraft central hydraulic pump and the second aircraft central hydraulic pump.

05-31-2012

20120108381

ECCENTRIC OSCILLATING GEAR DEVICE AND ASSEMBLING METHOD FOR CRANKSHAFT IN ECCENTRIC OSCILLATING GEAR DEVICE - An eccentric oscillating gear device comprises a crankshaft having an eccentric portion, an externally toothed gear having external teeth and a through-hole in which the eccentric portion is inserted, an outer cylinder, and a carrier. The carrier rotatably supports the crankshaft. The outer cylinder has internal teeth meshed with the external teeth of the externally toothed gear. The eccentric oscillating gear device is provided with rotational phase adjusting section for setting an orientation of the crankshaft about an axis thereof, on the basis of orientations of the outer cylinder and the carrier about an axis thereof.

05-03-2012

20120085860

AIRCRAFT ACTUATOR HYDRAULIC APPARATUS - A hydraulic pump is installed inside a wing at which a control surface is provided, and supplies pressure oil to an actuator when a loss or degradation occurs in the function of aircraft central hydraulic power sources. An electric motor is installed inside the wing and drives the backup hydraulic pump. A driver is installed inside the wing and drives the electric motor. A cooling device is installed inside the wing and simultaneously cools the backup hydraulic pump, the electric motor, and the driver.

04-12-2012

20120031006

RAILWAY PLATFORM DOOR DEVICE - Provided is a platform door device which makes it possible to reduce the length of time for a replacement operation when a panel-shaped portion of a door is damaged. The platform door device comprises a door, and a driving mechanism for moving the door forwardly and backwardly to close and open a gate on a platform. The driving mechanism includes a motor, a rotation body adapted to be rotated by the motor, and a driven body adapted to be driven according to the rotation of the rotation body so as to move the door, and the door has a panel-shaped main body, and a base segment detachably joined to the main body and attached to the driven body.

02-09-2012

20120029859

DAMPING TEST METHOD, CONTROL APPARATUS, HYDRAULIC SYSTEM, AND COMPUTER READABLE RECORDING MEDIUM - The control apparatus acquires an ideal velocity characteristic of a control surface, and the temperature of pressure oil of the actuator to be tested and the operating speed of the control surface when the actuator is attached to the control surface. The control apparatus corrects the ideal velocity characteristic of the control surface by using the pressure oil temperature and the control surface operating speed. The control apparatus sets an upper limit and a lower limit by using a predicted value for a fluctuation range for a fluctuation factor that causes a fluctuation of the control surface operating speed, with reference to the corrected ideal velocity characteristic, measures the pressure oil temperature and the operating speed by actuating the control surface, with the actuator to be tested placed in a damping mode, and determines whether the measured value falls within the range between the upper limit and the lower limit.

02-02-2012

20120025015

AIRCRAFT ACTUATOR CONTROL APPARATUS - A plurality of hydraulically operated actuators that drive a control surface and a plurality of control systems that respectively control the operation of the actuators are included. Each of the control systems includes a control valve, a state switching valve and a test orifice circuit. The test orifice circuit includes a test orifice used for testing the performance of an orifice. The state switching valve is provided such that its position can be switched between an actuator connection position, a damping position and a test orifice position.

02-02-2012

20120001021

AIRCRAFT ACTUATOR HYDRAULIC SYSTEM - When a loss or degradation in the function of one of a first aircraft central hydraulic power source and a second aircraft central hydraulic power source occurs, a controller performs a control so as to operate the other backup hydraulic pump, out of a first backup hydraulic pump and a second backup hydraulic pump, which is connected downstream of the other hydraulic power source, which is the other of the first and second aircraft central hydraulic power sources. Oil flowing through the other backup hydraulic pump is cooled by an oil cooler of the other hydraulic power source by operation of the other backup hydraulic pump in a state where the other hydraulic power source is being operated.

01-05-2012

20110290938

ACTUATOR CONTROL APPARATUS - Herein disclosed is an actuator control apparatus, comprising primary control means for producing a control signal used to control an operation of an actuator in accordance with an instruction signal indicative of an operation of the actuator, secondary control means for producing a control signal in accordance with the instruction signal; and switching means for selectively switching one of the primary control means and the secondary control means to the other, and in which the secondary control means is less in the number of functions than the primary control means, and each of components constituting the secondary control means is easier in fault verification than a component constituting the primary control means the most difficult in fault verification among all of components constituting the primary control means.

12-01-2011

20110290353

HYDRAULIC SYSTEM FOR AIRCRAFT ACTUATORS - An electric motor drives a variable capacity backup hydraulic pump that can supply pressure oil to an actuator when a loss or reduction occurs in the function of an aircraft central hydraulic power source. A power source unit rectifies electric power supplied from a variable frequency supply. A driver supplies the electric power from the power source unit, and drives the electric motor so as to rotate the pump at a predetermined constant rotational speed. The constant rotational speed is set, based on the change in the efficiency of each of the pump, the electric motor, and the driver with respect to the rotational speed of the pump, such that the overall efficiency, obtained as a product of these efficiencies, has a maximum value.

HYDRAULIC APPARATUS FOR AIRCRAFT ACTUATORS - A pump unit installed inside a wing includes a backup hydraulic pump that can supply pressure oil to an actuator when a loss or reduction occurs in the function of an aircraft central hydraulic power source and an electric motor that drives the pump. A wing structure portion forming the surface structure of the wing is provided with an inlet port and an exhaust port that are formed therethrough. The inlet port is provided so as to be opened and closed by an inlet port opening/closing portion, and the exhaust port is provided so as to be opened and closed by an exhaust port opening/closing portion.

11-17-2011

20110275469

GEAR TRANSMISSION - A gear transmission comprises an internal gear, an external gear, a first gear, a crankshaft, a two-stage gear and a second gear. The first gear is affixed to an end of the crankshaft, which eccentrically rotates one of the internal gear and the external gear. The two-stage gear comprises a center gear and an outer-toothed ring gear. The center gear meshes with the first gear. The outer-toothed ring gear surrounds the first gear. The second gear meshes with the outer-toothed ring gear and transmits torque from a motor to the two-stage gear. The two-stage gear is configured such that the center gear and the outer-toothed ring gear are each at least partially disposed in a common plane that crosses the rotational axis of the gear transmission.

11-10-2011

20110266390

HYDRAULIC APPARATUS FOR AIRCRAFT ACTUATORS - A pump unit installed inside a wing, and a panel body constituting part of a wing structure portion forming a surface structure of the wing are provided. The pump unit includes a backup hydraulic pump that can supply pressure oil to an actuator when a loss or reduction occurs in the function of an aircraft central hydraulic power source and an electric motor that drives this pump. Except for at least the panel body, the wing structure portion is formed from fiber reinforced plastics. The panel body is formed of a metallic material.

11-03-2011

20110264242

ACTUATOR CONTROL SYSTEM - An operation control apparatus includes a command generation portion that generates a command signal for commanding operation of a control surface, and first and second monitoring portions that monitor an abnormality of operation of first and second control portions, respectively, of the actuator control apparatus. The actuator control apparatus includes first and second control portions that generate a control signal for an actuator for driving the control surface and that are different in design, and a switching unit that switches the connection to the actuator from one of the first and second control portions to the other, when an abnormality is detected by the first and second monitoring portions. Accordingly, it is possible to monitor a generic failure, and realize redundancy enabling control of the overall operation of the actuator, from start to finish, when a generic failure has occurred, thus realizing further simplification and streamlining of the configuration.

10-27-2011

20110256000

LOCAL BACKUP HYDRAULIC ACTUATOR FOR AIRCRAFT CONTROL SYSTEMS - A backup system is provided that has a local electric motor and pump for some or all of hydraulic actuators. A local backup hydraulic actuator has two power sources, hydraulic as primary and electrical as backup. During normal operation, the hydraulic actuator receives pressurized fluid from a hydraulic system and the fluid flow to the chambers is controlled by a servo valve. If the hydraulic system fails, the electronic controller detects the failure by observing the signal indicative of the pressure from the pressure sensor, and the controller powers the local hydraulic pump to provide high pressure hydraulic fluid to the hydraulic actuator via the servo valve.

10-20-2011

20110243739

WINDMILL PITCH DRIVING APPARATUS - A windmill pitch driving apparatus is provided, which is capable of achieving improved durability as well as improved output torque and reduced size. The apparatus includes a fixing mechanism for fixing the output pinion to the output shaft. The fixing mechanism includes a positioning portion and a pressure-applying fixing portion. The positioning portion positions the other end side of the pinion with respect to the output shaft side. The pressure-applying fixing portion biases the pinion toward the output shaft in the direction of the axis P of the output shaft from the one end side and is fixed to the output shaft while applying pressure to the pinion.

ACTUATOR-LINK ASSEMBLY MANUFACTURING METHOD, ACTUATOR-LINK ASSEMBLY DESIGNING METHOD, AND ACTUATOR-LINK ASSEMBLY - In a material determining step, the material constituting an actuator and the material constituting a link are determined such that at least one of the materials contains fiber reinforced plastic. In a computing step, a computation model that defines the relationship between a control surface, the actuator, and the link is used to compute the change in gain margin with the change in a rigidity ratio, which is the ratio of the rigidity of the link to the rigidity of the actuator. The rigidities of the actuator and the link are determined in a rigidity determining step based on a result of the above-described computation, the shapes of the actuator and the link are determined in a shape determining step, and the actuator and the link are formed in a formation step, and are assembled in an assembly step.

09-15-2011

20110207576

GEAR TRANSMISSION - A gear transmission comprises an external gear and an internal gear that rotates eccentrically relative to the external gear while meshing with the external gear. At least one first recess is formed on an outer peripheral side of the internal gear so that at least a portion of a motor is disposed within the first recess, thereby shortening the length and width of the device that includes the motor and the gear transmission in the axial and radial direction, respectively.

08-25-2011

20110182735

WINDMILL PITCH DRIVING APPARATUS - A windmill pitch driving apparatus is provided, which is capable of achieving improved output torque and reduced size as well as reduced weight. Lubricating oil is enclosed in a casing

07-28-2011

20110160876

ACTUATOR CONTROL SYSTEM - An apparatus includes a command generation portion that generates the command signal, and a first monitoring portion that monitors an abnormality relating to actuation of the actuator control apparatus. The actuator control apparatus includes a control portion and a second monitoring portion. The control portion generates a control signal for controlling operation of the actuator in accordance with the above-described command signal. The second monitoring portion monitors an abnormality that relates to actuation of the actuator control apparatus and that is different in type from an abnormality monitored by the first monitoring portion.

06-30-2011

20110139938

AIRCRAFT REACTION LINK - An aircraft reaction link includes a pair of linear portions, a coupling portion that couples ends of the pair of linear portions on the same side to each other, a fulcrum shaft attachment portion, and a cylinder attachment portion. A metal frame that is made of a metallic material and that is provided so as to extend across the coupling portion and the pair of linear portions and a composite frame that is made of fiber-reinforced plastic and that is provided so as to extend at least in the pair of linear portions are bonded together, and thereby, the pair of linear portions and the coupling portion are formed. The metal frame is provided so as to extend from the fulcrum shaft attachment portion to the cylinder attachment portion.

06-16-2011

20110132433

GEAR TRANSMISSION AND PHOTOVOLTAIC POWER-GENERATING APPARATUS USING THE GEAR TRANSMISSION - A gear transmission comprises a crankshaft that eccentrically rotates one of an internal gear and an external gear. A first gear is attached to one end of the crankshaft. A ring gear having internal teeth meshes with the first gear. An intermediate gear meshes with external teeth of the ring gear. A second gear is attached to one end of an output shaft of a motor and meshes with the intermediate gear. The motor and the crankshaft are positioned, relative to the intermediate gear, on the same side in the axial direction of the gear transmission.

GEAR TRANSMISSION - A gear transmission comprises an internal gear member, a carrier, an external gear and a first shaft. An internal gear is formed on an inner circumference of the internal gear member. The carrier is positioned coaxially with an axis of the internal gear and is rotatably supported on the internal gear member. The external gear meshes with the internal gear and is supported on the carrier in an eccentrically rotatable manner. The first shaft extends through the carrier along the axis of the internal gear, is rotatably supported on the carrier and transmits torque inputted at one end to the other end thereof

02-03-2011

20110015024

GEAR DEVICE - A gear device has an outer cylinder fixed to a first mating member and a crankshaft inside the outer cylinder. An external gear is mounted to an eccentric portion of the crankshaft and meshes with internal teeth of the outer cylinder. A carrier is fixed to a second mating member. Rocking rotation of the external gear rotates the carrier coaxially to the outer cylinder. A cylindrical body is inserted in an axial through-hole of the carrier. The carrier has a first portion on one end of the cylindrical body and a second portion on an axially intermediate portion of the cylindrical body. The other end of the cylindrical body extends toward a corresponding mating member while protruding axially beyond the second portion. An outer diameter of remaining portions of the cylindrical body do not exceed an outermost diameter of the portion on which the first and second portions are fit.

01-20-2011

20110015023

ECCENTRIC SPEED REDUCER - An eccentric speed reducer is provided with which it is possible to achieve improved output torque without increasing the outer radial dimension of the casing. A tapered side is formed on at least part of a peripheral side surface of struts

APPARATUS WITH A SEAL - An apparatus comprises first and second members that are rotatable relative to each other. The second member is disposed in a circular hole defined in the first member. A main oil seal is disposed between the second member and an inner circumferential surface of the circular hole of the first member. A secondary oil seal is movable along a center line of the circular hole of the first member and is positioned on the opposite side of the main oil seal from the lubricant. A dust seal is positioned on the opposite side of the secondary oil seal from the lubricant. An annular groove is formed on one of the inner circumferential surface of the circular hole and an outer circumferential surface of the second member. The secondary oil seal is movable from a reserve position, which opposes the groove, to a sealing position, which does not oppose the groove.

01-20-2011

20110009981

Knee Joint Including Manual Lock Mechanism and Artificial Thigh - The disclosure relates to a technology of a manual lock mechanism for manually switching over the oscillating motion of an upper member and a lower member at a knee joint between a locked condition and an unlocked condition. More particularly, the disclosure aims at a simple structure of the manual lock mechanism and a size reduction of the knee joint or an artificial leg including the manual lock mechanism. For these purposes, one of oscillating shafts for swingingly coupling the upper and lower members is regulated. Therefore, the manual lock mechanism includes an oscillating shaft including an irregular part and a lock member for regulating the movement of the oscillating shaft. The lock member can be switched over between a locked condition where the lock member is in contact with the irregular part of the oscillating shaft and the unlocked condition where it is separate from the irregular part. When the lock member is in the locked condition, force from the oscillating shaft is applied as compression load in the longitudinal direction of the lock member.

01-13-2011

20110009224

ECCENTRIC SPEED REDUCER - There is provided an eccentric speed reducer that achieves improved output torque without increasing the outer radial dimension of a casing. The strut includes, at the basal portion of a peripheral side surface where the strut is continuous with the base carrier, first curved portions and second curved portions that are in a form of a curved surface having a different radius of curvature. The first curved portions are provided at the supporting hole-facing sides of the strut that are disposed facing the rotation supporting holes. The second curved portions are provided between an outer side located in the strut at an outer position in the radial direction of the casing and on the side facing the inner circumference of the casing, and supporting hole-facing sides. The second curved portions have a larger radius of curvature than the first curved portions.

FLIGHT CONTROL SYSTEM - A flight control system for an aircraft includes a PCS generating a pilot control signal based on pilot operations of a stick control and others, an FCC for controlling flight control surfaces of the aircraft, a surface control device arranged for each flight control surface to control it based on a surface control signal transmitted from the FCC, and a data bus for connecting the FCC and the surface control device. The surface control device includes an ACE executing servo calculation process and outputting an actuator operation signal, and an actuator section for controlling hydraulic oil supplied to a hydraulic cylinder based on the actuator operation signal. A single flight control surface is controlled by a plurality of ACE and actuator section pairs, and the ACE includes a normal control section, a monitoring section, a backup control section, and the like.

12-16-2010

20100270426

AIRCRAFT ACTUATOR - An aircraft actuator is provided that can achieve a significant weight reduction, while securing a sufficient tensile strength and a sufficient buckling strength, even if it is provided with a reaction link in which large bent portions are formed. A reaction link is made of fiber reinforced plastic, and includes a pair of linear portions, a coupling portion, and a pair of bent portions. The cross section at the pair of linear portions, the coupling portion, and the pair of bent portions is formed as a hollow cross section. The outer cross sectional area of the hollow cross section at each of the pair of bent portions is configured to be larger than the outer cross sectional area of the hollow cross section at each of the pair of linear portions.

GEAR DEVICE AND TURNING PORTION STRUCTURE OF INDUSTRIAL ROBOT USING THE GEAR DEVICE - A gear device includes: an input gear fixed to an output shaft of a motor; an internal gear; an external gear which rotates while revolving around a central axis of the internal gear while meshing with the internal gear; a carrier supported rotatably within the internal gear and adapted to rotate about the central axis of the internal gear in conjunction with the rotation of the external gear; a plurality of crankshafts which are rotatably supported by the carrier and are adapted to cause the external gear to revolve around the central axis of the internal gear; transmission gears each provided on a central portion of each of the crankshafts; and a cylindrical gear which meshes with the transmission gears of the crankshafts and to which rotation is transmitted from the input gear, wherein the cylindrical gear is located on a radially inner side of an imaginary line passing through a center of rotation of each crankshaft and is rotatably supported by the carrier, and wherein the input gear and the cylindrical gear mesh with each other in an axially central portion of the carrier.

08-12-2010

20100162838

ELECTRIC ACTUATOR - An object of the present invention is to provide an electric actuator having a structure capable of reducing an external force or impact acting on an screw shaft when a piston rod is at a stretched position. An electric actuator

07-01-2010

20100154579

JOINT MECHANISM - There is provided a joint mechanism capable of restraining a rise in a temperature of a lubricant of a speed reducer, bringing the speed reducer into a stable operating state and preventing early destruction of the speed reducer.

06-24-2010

20100139786

Multi-Protection Valve - An object of the present invention is to allow a vehicle to run in the case where an air compressor connected to an input port fails so as to cause air leakage from the location of the failure, by preventing air in a parking brake circuit from leaking from the failure location through a bleed air flow path. In order to achieve the object, a multi-protection valve includes: a communication passage for communicating between an input chamber and a service output port so as to bypass a pressure control valve provided in correspondence with the service output port, the communication passage having a check valve for preventing air from flowing from the service output port into the input chamber and a throttle for restricting the air flow rate; and a bleed air flow path for communicating between the input chamber and the parking output port so as to bypass pressure control valves, the bleed air flow path having a second check valve for preventing air from flowing from the input chamber to the parking output port. The multi-protection valve further includes a third check valve provided between the input chamber and an input port to prevent air from flowing from the input chamber to the input port.

06-10-2010

20100132350

ELECTRIC ACTUATOR - An object of the present invention is to provide an electric actuator having a structure capable of reducing an external force or impact acting on a screw shaft when a piston rod is at a stretched position.

06-03-2010

20100116077

ROBOT ARM - In a robot arm having a closed link mechanism between a base and a hand, misalignment of the hand is inhibited during when the robot arm is used to move high temperature work.

OPTICAL PATH SWITCHING DEVICE - With the invention, it is possible to suppress losses of light for monitoring and enhances the optical confinement efficiency into an optical fiber for output over the related art. The optical path switching device

GEAR TRANSMISSION - An external gear has a number of teeth differing from a number of teeth of an internal gear, and is maintaining in a meshing state with the internal gear. A center through hole and an offset through hole are formed in the external gear. The center through hole is formed at the center of the external gear, whereas the offset through hole is formed at a position offset from the center of the external gear. Column-shaped member of a carrier passes through the offset through hole. A pair of supporting members of the carrier respectively supports each end of the column-shaped member. A pair of grooves is formed on a surface of a shaft of a crank member at positions between which an eccentric rotation member of the crank member is interleaved. First rolling elements and first outer races are arranged between the supporting members and the grooves. The shaft of the crank member is supported so as to be capable of rotating with respect to the carrier and incapable of moving in its axial direction.

03-04-2010

20100024302

SENSOR FOR AUTOMATIC DOOR SYSTEM, AND AUTOMATIC DOOR SYSTEM WITH SUCH SENSOR USED THEREIN - A light-emitter emits light into a door opening of an automatic door system. A light-receiver receives light from the light-emitter which has passed through the door opening and develops a light-reception indicative signal. A door controller causes the light-emitter to stop emitting light and, thereafter, start emitting light. An auxiliary sensor is judged to be operating in order when the light-receiver does not develop light-reception indicative signal in a state where the light-emitter is not emitting light, and, thereafter, develops a light-reception indicative signal when the light-emitter resumes emitting light; otherwise, the auxiliary sensor is judged to be out of order.

02-04-2010

20100009801

REDUCTION GEAR TRANSMISSION - A reduction gear transmission, a kind of eccentrically-oscillating-type reduction gear transmission, is provided with an internal gear, an external gear, a carrier, a crank member and a bearing mechanism. The external gear comprises a through hole at a position offset from its central axis. The carrier comprises a support shaft that extends into the through hole of the external gear. The crank member comprises a though hole into which the support shaft extends and an eccentric member that engages inside the through hole of the external gear. The central axis of the eccentric member is offset from a central axis of the support shaft. The bearing is disposed between the support shaft and the crank member, and supports the crank member such that the crank member is capable of rotating with respect to the central axis of the support shaft. In this reduction gear transmission, a clearance that extends along the support shaft between the carrier and the inner ring is narrower than a clearance between the carrier and an end face of the crank member.

01-14-2010

20100004086

REDUCTION GEAR TRANSMISSION AND SOLAR TRACKING PHOTOVOLTAIC POWER GENERATION UNIT UTILIZING THE SAME - A first reduction gear unit has a first input shaft that rotates in accordance with the rotation of an output shaft of a motor, a first external gear that revolves orbitally around an axis line of the first input shaft, and a first internal gear that has a number of teeth differing from the number of teeth of the first external gear. A second reduction gear unit comprises a crankshaft that rotates in accordance with the rotation of a first output shaft, a second external gear having a through hole formed at a center itself, a cylindrical member passing through the through hole of the second external gear, a second internal gear that has a number of teeth differing from the number of teeth of the second external gear, and a second output shaft that rotates around an axis line of the second internal gear. The first reduction gear unit is disposed between an outer circumferential surface of the second reduction gear unit and an inner surface of the cylindrical member.

01-07-2010

20090272110

LOCAL BACKUP HYDRAULIC ACTUATOR FOR AIRCRAFT CONTROL SYSTEMS - A backup system is provided that has a local electric motor and pump for some or all of hydraulic actuators. A local backup hydraulic actuator has two power sources, hydraulic as primary and electrical as backup. During normal operation, the hydraulic actuator receives pressurized fluid from a hydraulic system and the fluid flow to the chambers is controlled by a servo valve. If the hydraulic system fails, the electronic controller detects the failure by observing the signal indicative of the pressure from the pressure sensor, and the controller powers the local hydraulic pump to provide high pressure hydraulic fluid to the hydraulic actuator via the servo valve.

11-05-2009

20090266934

HYDRAULIC FLUID SUPPLY DEVICE AND ELECTRIC ACTUATOR - An electric actuator of the present invention includes a hydraulic fluid supply device and an actuator actuated in response to an input of hydraulic fluid from a variable-volume pump. The hydraulic fluid supply device includes an adjustable-speed motor, the variable-volume pump which is driven by the adjustable-speed motor and ejects hydraulic fluid, an electric motor control unit which controls the adjustable-speed motor so as to achieve an intended rotation speed, and a pump control unit which controls the variable-volume pump so that the ejection volume of the variable-volume pump decreases with an increase in the ejection pressure of the variable-volume pump.

ECCENTRIC OSCILLATING GEAR MECHANISM AND INDUSTRIAL ROBOT JOINT CONSTRUCTION USING THE SAME - There is provided an eccentric oscillating gear mechanism including an internal gear, an external gear meshing with the internal gear, a crankshaft for moving the external gear eccentrically, and a carrier for supporting rotatably the crankshaft, the internal gear and the carrier being made to rotate relatively, wherein a cylindrical tube body, which penetrates the eccentric oscillating gear mechanism in an axial direction, is supported rotatably on the carrier.

VACUUM SYSTEM AND METHOD FOR OPERATING THE SAME - The present invention provides a vacuum system including a vacuum pump capable of operating at a rotation rate controlled appropriately when a predetermined process is performed in a vacuum chamber, which contributes to energy conservation. The vacuum system serves as a semiconductor manufacturing system comprising a vacuum pump controller which has a gas flow mode and an auto-tuning mode for determining a rotation rate of a vacuum pump unit to set the rotation rate to a target value lower by a predetermined value than the full operation rate of gas flow rate control means under the condition that pressure within the process chamber is vacuum pressure necessary for the gas flow mode. The vacuum pump controller has means for reducing the rotation rate of the vacuum pump unit from a rated rotation rate in the auto-tuning mode under the condition that pressure within the process chamber is vacuum necessary for the gas flow mode, to determine whether or not the operation rate of an APC valve reaches a target value, and means for storing, as the rotation rate necessary for the gas flow mode, the rotation rate of the vacuum pump unit, which is obtained when it is determined that the operation rate of the APC valve reaches the target value.

Rotation Output Device - A compact rotation output device is realized by disposing an output shaft of a reduction gear transmission coaxially with an axis line of a rotating disk while simultaneously ensuring a space in a rear face of the rotating disk through which a columnar bar or wiring etc. can pass.

AUTOMATIC DOOR SYSTEM - [Subject] Whether interruption is present in the connections of automatic door constituting units is detected.

02-05-2009

20090019961

Turning Portion Structure of Industrial Robot - To facilitate an integrating operation and to make fabricating cost inexpensive. An idle gear for transmitting rotation of an input gear of a drive motor to a cylindrical gear is rotatably supported by an input side end portion of a specific one crank pin, and therefore, the idle gear may simply be supported by the crank pin, further, a length in an axial direction of the cylindrical gear brought in mesh with both of the idle gear the input gear is sufficiently to a degree of being more or less longer than a distance between remote side ends of the two gears.

01-22-2009

20090017955

Reduction Gear Box - The manufacturing process of a reduction gear box in which a rotation direction converting part and a reduction part are joined together is simplified by unitizing both the rotation direction converting part and the reduction part and by manufacturing the reduction gear box by assembling the rotation direction converting unit and the reduction unit.

01-15-2009

20080298948

Heavy Object Turning Apparatus - A technique of a heavy object turning apparatus that is compact, is enabled to reduce the distance between the center of gravity of a heavy object and a pivot positioned on an axis, and is configured so that a turning arm and a drive unit has a length in the direction of an axis passing through the pivot around which the heavy object is turned. A control unit fixes a support base onto a stand. An orthogonal axis reduction gear serves as an anterior reduction gear and has a configuration in which an output shaft is on an axis of a planetary gear type reduction gear serving as the posterior reduction gear. An input shaft is perpendicular to the axis. The orthogonal reduction gear is constituted by a hypoid reduction gear or a worm-geared reduction gear. A motor is disposed on the bottom surface of the orthogonal reduction gear.